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040 _aMX-SnUAN
_bspa
_cMX-SnUAN
_erda
050 1 4 _aTD365
_b.P7
245 0 2 _aA prototype decision support system for the USDA water quality initiative
_cD. S. Yakowitz
264 1 _aTucson, AZ
_bSouthwest Watershed Research Center
_c1993
300 _a1 volumen :
_bilustraciones
336 _atexto
_btxt
_2rdacontent
337 _ano mediado
_bn
_2rdamedia
338 _avolumen
_bnc
_2rdacarrier
650 4 _aAgua
_xCalidad
_xAdministración
_936716
650 4 _aIrrigación agrícola
_945809
700 1 _aYakowitz, D. S.
_987859
710 1 2 _aEstados Unidos.
_bDepartment of Agriculture.
_bAgricultural Research Service.
_987852
942 _c1
999 _c91886
_d91886